In memory database or Caching solution

[robvarga]

There is a big section in hibernate in action all about caching and performance tuning.

I don't think you'll gain anything from using an in memory database to be honest.

On a final note, don't forget, "Tin is cheap". Sometimes it's just easier to be pragmatic and throw some hardware at a problem. A monster server is after all about the same price as a contractors wages for a week.

In our performance testing environment in the current project, we will probably use hp rx4640s, which are priced somewhere in the area of 60,000 GBP... I would LOVE to earn that much in a week... :-)

BR,

Robert